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git submodule update --remote --mergeSwiftUI is a declarative framework for building user interfaces on Apple platforms.Instead of describing step-by-step how the UI should change (imperative), you declare what the UI should look like for a given state. When the state changes, SwiftUI automatically updates the UI to match.
Key concepts:
- Declarative Syntax: You describe the UI by declaring views and their relationships, not by writing code to update them manually.
- State-driven: The UI is a function of your app’s state. When the state changes, the UI updates automatically.
- Composable Views: Complex interfaces are built by combining small, reusable view components.
- Reactive: Uses property wrappers like @State, @Binding, and @ObservedObject to react to data changes.
Example:
@State private var isOn = false
var body: some View {
Toggle("Enable Feature", isOn: $isOn)
if isOn {
Text("Feature is enabled!")
}
}Summary:
SwiftUI is about declaring what you want the UI to be for a given state, letting the framework handle the updates, and composing interfaces from small, reusable pieces. This leads to simpler, more maintainable code compared to traditional imperative UI frameworks.
- Documentation
- Videos
- Forums
- Sample Code
- Xcode and SDKs